PORTABLE REFERENCE LASER AND LASER ACCESSORIES Russian patent published in 2012 - IPC G01C9/12 G01C15/00 G12B5/00 

FIELD: physics.

SUBSTANCE: laser has a housing and a pendulum unit inside the housing. The pendulum unit comprises a pendulum support which can be turned in a support bearing unit, and a pendulum bob mounted below the pendulum support. The laser unit is mounted in said pendulum unit such that the laser forms at least one level line or plumb line when the pendulum unit is in an unfixed position. A pendulum retention mechanism is included in the device in order to block the laser unit in fixed mode. In the fixed mode, the laser unit is in a fixed position regardless of the orientation of the laser. Said pendulum retention mechanism has an actuating arm for the pendulum locking mechanisms which includes a pair of L-shaped recesses and a pair of turning pendulum locking mechanisms, each having a rod which corresponds to one of said L-shaped recesses.

EFFECT: possibility of projecting laser level or plumb lines on any surface at any required angle.

18 cl, 13 dwg